What is the Difference Between Gear Oil and Engine Oil?
1 Answers
Automotive gear oil and engine oil differ in their working environments and primary focuses. Here is a related introduction to the differences between gear oil and engine oil: 1. Different working environments: Gear oil is mainly used in manual transmissions, reducers, and differentials, while engine oil is primarily used in automobile engines. Since gear meshing involves direct contact, gear oil must have extremely high viscosity to form an oil film at the gear meshing points. In contrast, engine lubrication involves mostly surface contact without the extreme high pressure generated by gear meshing, so the viscosity requirements are relatively lower. 2. Different focuses: Gear oil emphasizes protecting gears under high temperatures, while engine oil focuses on its fluidity at low temperatures. Additionally, gear oil is strongly alkaline, whereas engine oil is weakly alkaline.